author(s)
A Arulmozhi, A Kumaresan, M Sasikala, N Pazhanivel, K Gopal and GA Balasubramaniam

abstract
A six years old male Labrador dog was presented to Teaching Veterinary Clinical Complex, Veterinary College and Research Institute, Namakkal for treatment with the history of gradual enlargement of both testes for the past seven months. Clinical examination of the dog revealed the presence of hard palpable masses on both testes. Surgically both the testes were removed under standard anesthetic protocol. The testicles were preserved in 10% formalin and sent to Department of veterinary pathology for histopathological examination. The cut section of both formalinized testes revealed round, well developed tumour with yellowish brown parenchyma. Histomorphology of left testicular showed diffuse arrangement of cuboidal to polyhedral cells with lipid vacuoles and the right testicular mass exhibited cluster of cells surrounding empty spaces with abundant fibrocollagenous storma. The case was confirmed as bilateral involvement of testicles with leydigoma.